High Temperature and Pressure Elution System

Product Features
– The complete set of desorption-electrolysis system equipment includes: desorption column, electrolytic cell, electric heater, desorption solution tank, filter, electric control cabinet, rectifier cabinet, circulation pump, acid washing column, activated carbon regeneration kiln, etc.
– High-Efficiency Desorption Process：Desorption is performed at 150°C high temperature and 0.40–0.50 MPa high pressure. Compared with conventional systems, the temperature is 30–55°C higher and the pressure is 0.2–0.5 MPa higher. Desorption and electrolysis of loaded carbon can be completed within 12–14 hours, reducing working time by nearly threefold. Desorption rate reaches 98%–99.8%.
– Low Barren Carbon Grade：Barren carbon grade ≤30 g/t for over 80% of users; ≤50 g/t for over 95% of users.
– Short Desorption Time: Desorption-electrolysis at 150°C takes 8–10 hours, with the full cycle ≤16 hours, delivering high efficiency.
– Eco-Friendly Cyanide-Free Process:
• Adopts cyanide-free desorption technology — no NaCN required. Desorption solution can be recycled dozens of times, reducing production costs by over 50%.
• Non-toxic composite desorption reagent contains carbon activators, which regenerate and activate activated carbon, improving gold adsorption rate by 1%–6% and delivering significant economic benefits.
• The new cyanide-free composite desorption reagent is suitable for various types of difficult-to-desorb loaded carbon. Traditional equipment using only NaOH has poor adaptability to certain ores.
• Green and environmentally friendly process, improving working conditions and ensuring personnel health and safety.
– Vertical or Horizontal Electrolytic Cell: Electrolysis efficiency ≥99.99%; equipped with an automatic gold sludge discharge system to reduce labor intensity; imported “catalytic reaction cathode mesh” ensures stable electrolysis performance with a service life of 2–6 years.
– Low Operating Cost: Direct processing cost per ton of loaded carbon is 300–600 RMB. Compared with cyanide-based processes such as Zadra and AARL, costs are reduced by 60%–90%.
– Strong Adaptability: Effectively processes flotation gold concentrate and high-silver ore difficult-to-desorb loaded carbon.
– Automated Carbon Handling: Fully automatic loss-free carbon conveying from the desorption column to the acid washing column throughout the entire process. No manual loading required, reducing carbon and gold losses.
– Enhanced Gold Recovery: Provides high-efficiency equipment for recovering gold-bearing carbon fines from water, recovering an additional 5–20 kg of gold per year.
– Easy Operation：Precise temperature and pressure control with a high degree of automation; operable by a single person.
– Triple Safety Protection：Intelligent system protection: automatically cuts off the heater when the circulation pump stops or pressure abnormalities occur; the pressure release mechanism automatically depressurizes to normal values; the safety valve serves as the ultimate protection, comprehensively ensuring operational safety.
– Fast ROI：Some users have achieved significant economic benefits after replacing their equipment with this system, recovering investment within several months to one year.

Selection Guidelines
– The system has been serialized. It is recommended to select according to the specifications in the table below, or flexibly configure according to the user’s requirements.
– Model JH-1000 denotes: Jinhao desorption-electrolysis equipment, processing 1,000 kg of loaded carbon per batch within 12 hours.